The Chess pieces from the Astral Shrine Chain look pretty awesome (hard to pick art from this excellent game).
It's probably because I'm a dog person, but I just noticed my new favorite card art (+flavor text): Skillful Dodge.
Yay! I was really happy with Ben's art on that one. IMHO one of the best-looking cards. I'll take gladly credit for the flavor text
The AotA Elf Priest is the best looking character in the game, hands down. He's like the [insert handsome celebrity you find good-looking] of the Cardhunter world. I mean, DAAAAAAAAAAAAAAAAAAMN
Icon-wise, I like Bimson's Glowstone Robes. Most of the legendaries have really neat icons, since so many are unique. Heartripper is pretty neat, too. For cards, I like the simplicity in the ascending order of crushing damage: Bludgeon Strong Bludgeon Powerful Bludgeon Mighty Bludgeon Obliterating Bludgeon (RIP ) Almighty Bludgeon Able Bludgeon and Trained Bludgeon don't follow the progression, which is fine with me. My favorite figure is the Egyptian-looking human priestess from the beta (below), which I missed out on, because I wasn't here until after the release. Sigh.